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  1. 02-03-2006, 01:19 PM #1
    humid1
    humid1 is offline Regular Guest
    Join Date
    Jun 2005
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    23
    I just had the heat exchanger replaced on my seven year old unit (75k BTU). Per the recomendations on this site, I had the repair guy check my returns and he stated they are sized correctly. He also told me to continue using the pleated filters (Merv 5) to keep everything clean. Based on that, is there anything else I can do to prevent another premature failure? The exchanger had rusted holes the size of a pencil eraser in it. The repair man said it's just the nature of the equipment and the outside location. Doesn't leave me feeling particularly confident. Just curious... any thoughts are appreciated.
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  2. 02-03-2006, 02:28 PM #2
    BaldLoonie's Avatar
    BaldLoonie
    BaldLoonie is offline Global Moderator
    Join Date
    May 2000
    Location
    Indianapolis, IN, USA
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    31,546
    In a gas pack, the heat exchanger is downstream of the cooling coil. That kills the heat exchanger so it is very common that they don't last. Sad to say. And nobody has told me why they do it that way, it is a big NO NO in residential equipment!
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